Calculating-machine.



K. Ff ZIEHM.

GALGULATING MACHINE.

APPLICATION FILED MAR. 3, 131A.

Patented Sept. I5, 1914.

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GALGULATING MACHINE. APPLICATION FILED 1113.3, 1914.

Patented Sept. 15,1914.

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APPLICATION FILED MAE. 3. 1914.

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I UNITED sTATEs PATENT OFFICE.

KURT F. ZIEHM, OF CHICAGO, ILLINOIS,ASSIGNOR T0 FELT & TABRANT MANUFAC-TUBING COMPANY, A CORPORATION OF ILLINOIS.I

CALCULATING-MACHINE.

Specification of Letters Patent.

Patented Sept. 15. 1914.

Application filed March 3, 1914. Serial No. 822,140.

To all whom may concern Be it known that I,KURT F. ZIEHM, a citizen ofthe United States, residing in Chicago, in the county of Cook and Stateof Illinois, have invented a new and useful Im- 1904; No. 767,107 ofAugust 9th, 1904; No.

960,528, of June 7th, 1910; No. 992,950 of May 23rd, 1911; No. 996,009of June 20th, 1911; No. 1,003,723 of September 19th, 1911; No. 1,028,344of Juney 4th, 1912; No. 1,066,- 096, of July 1st, 1913; N o. 1,072,933of September 9th, 1913; Nos. 1,074,704 and 1,074,` 705 of October 7th,1913; the foregoing patents having been granted on applications of Dori'E. Felt; No. 1,072,934 of September 9th, `1913, to Felt and Turck; andNo. 1,074,689 of October 7th, 1913, to G. S. Bollensen.

The invention has for an object to provide a calculating machine of thegeneral character set forth in the said Patent No. 1,072,933 in respectof the incidental safety locks against mismanipulation ofthe linger keysand erroneous results arising there` from;.that is to say, lockingmechanism adapted to'lock a key, after its adding movement, against afurther adding movement until the key has been restored to normalposition, and alsolocking mechanism adapt ed, on partial depression andrelease of a key, to lock other keys of .the said adding .mechanismagainst depression; but not comprising the normal safety'lock of thesaid' patent or the two-part keys and side interference guards thereof.And-the invention I has for a further object the effecting of suchlocking action through theA manipulation of unitaryorsubstan'tiallyone-part keys hav-'l ing a single-part keylstefm or keytop to re` cevethe finger-stroke.- 'And the'invention has for further objects theeifectlng 'of -all other improvements instructure or-functicnthat may befound to obtain in the mechanism hereinafter described or claimed.

In order to make the invention more clearly understood I have shown inthe accompanying drawings means for carrying the same into practicaleffect, Without limiting my improvements, in their useful applications,to the particular constructions which, for the purpose of explanation, Ihave delineated.

In the said drawings-Figure 1 is a plan view of a calculating machineembodying the invention. Figs. 2 and 3 show a side View of the same, ona larger scale, looking at the machine from the right lhand side,

with the side casing removed.l F ig. 4 is a y longitudinaltverticalsection, partly in elevation, of a portion of the same, one line ofFig. 1. Figo is a longitudinal vertical section showing in elevation`the locking mechanism. Fig. 6 is an elevation of the lockin mechanismdetached, with a key depresse. Fig. shows the front portion of thelocking mechanism, with the pawl 137 engaged. Fig. 8 is a verticalcrosssection, partly'bro'ken away on line 8-8 of Fig. 2, some of the .partsbeing omitted. Fig. 9 is a vertical cross section of a part 4of themachine on line 9-9 of Fig. 2, some of the parts being omitted. Figs.10, 11 and 12 are detail views, in vertical cross section', respectivelyon lines 10-#10,11-11 and 12-12,

offFig. 2, showing` parts of the locking ,is a plan view of a form ofthe machine showjl ing extra keys at the head of the unitscol-V umn,beyond the nine key; these keys, hav ing'nokeys beside them', beingunitary and not -provided with interference guards, While the other keysof the machine having keys beside them are twopart keys provided withinterference guards. Figs. 17and 18 show'aA .longitudinal l'verticalsection of thesame on' line XVII-XVII of Fig. 16. Fig. 19 is a verticalcross section on llne XIX-XIX of Fig. 416, showing a portion of themachine. Figs. 20 and 21 show respectively side views of the'eddand'even stop levers, of the units column of the machine shown in Figs.16 to 19. v22 is a side view of the rear portion of the auxiliary orlock lever of said units column. Fig.'"23 is a vertical longitudinalsection of a portion of a machine in which the hooks for normallylocking the column actuator are omitted. Fig. 24 is a perspective viewof the suspending links used in this latter'form of machine.

Referring to the drawings', 1 indicates the vertical retaining platesconstituting a part of the frame of the machine, and 2 the top platethereof. The frame preferably com prises vertical side or retainingplates, such as are shown at 1, and similar intermediate plates one ofwhich is arranged in each of the Vspaces between the various orders orcolumns of the machine and between the numeral wheels 3. All of thesevertical plates are secured to or mounted on a base (not shown) and areor may be rigidly connected with each other by suitable cross bars ortie rods 4.

The accumulator mechanism, including the numeral wheels, is driven andcaused to be actuated inthe calculating operation by denominationalseries of linger keys 2 mounted to reciprocate vertically in guideapertures or bearings in the top plate 2, and the lower end of each keystem is pressed upward by a lever 5 and spring 6 carried by lower frameparts 7.

For convenience I will recapitulate certain of the parts, and theirfunctions, known in and by the prior patents above mentioned; but it isnot necessary to an explanation of the present improvements to' repeatall of the description and illustration of said patents. The principalparts are as follows: Column actuators or segment levers 8 pivotallymounted at 9 on the rear part of the frame 1 and yieldingly held up byaccumulator-actuating springs 10; odd and even .stop levers 11, 12, eachof which may comprise two separate co-acting parts, the main` leverportions of which are pivoted to the rear of the frame at 13;accumulator pinions 18 mounted on the cross pivot accumulator shaft 19and engaged and turned by the segments of the column actuators 8;accumulator ratchets 20 fixed to the pinions 18; lantern Wheels 21having pawls pivoted thereon and arranged within the ratchet, wherebythe ratchets turn backward freely but on their forward movement rotatethe lantern wheels by means of the said pawls; intermediate gears 24 onthe intermediate pick-up shaft 25,.which are engaged and driven byaccumulator gears attached to the lantern wheels and which engage anddrive the numeral wheel gears 27; suitable carrying mechanism (as shown)operating. between the several orders of the machine to carryaccumulations from a` lower to a higher' order.

The machine is of the duplex type; that is to say, two keys side byside, in different orders, may be simultaneously depressed and each willhave its proper and full effect in the accumulation. To this end thecarrying mechanism is adapted to permit prime actuations of theaccumulator mechanism in a pluralityof orders simultaneouslfy. That suchfull effect of the depression 0 lthe key of lower order be attained itis necessary that any carrying, which may be due to take place from thelower numeral wheel to the higher numeral wheel, shall not be lost byreason of the higher-numeral wheel having such forward motion' that thecarrying mechanism may not affect it. The construction and operation ofthe parts above referred to can be most conveniently understood byreference to thesaid Patent N o. 960,528.l

With the above described accumulator mechanism is to be combined asuitable canceling mechanism, preferably that setrforth in the saidPatents No. 1,072,934 and No. 1,072,933, not necessary to be furtherdescribed in detail in connection with the present invention.

I will now refer t0 the principal parts of the safety locks for theaccumulator'mechanism and, under some conditions, the finger keys. 82 isa hook (Figs. 4, 10, 14) with which each -column actuator 8 is formed onprovided, and with these hooks are engaged 'corresponding swinging hooks83 pivoted on a cross rod 84 fixed in the frame. Since the key stemengages the top of the column actuator by a shoulder or projection 170(Figs. 15, 9, 2) the key cannot be operatively depressed till the hooks83 have been swung forward outfrom under the actuator hooks 82. 86 is alock lever (Figs. 13, G, 10, 8, 15), one for each column arranged at theside of the column actuator and pivoted on the'same cross rod 9 whichforms the pivot for all of the column actuators. It is formed on itslupper edge, as by projections 87, to be properly engaged by the shoulder17 0 so that when the key is sufficiently depressed the lock lever isdepressed in advance of the column actuator. The lock lever is furtherprovided with a lateral projection 88 which rests on the horizontalforwardly extending arm 89 of an elbow lever 90 pivoted at 91 (Fig. 6)on the column actuator. The elbow lever has an inner .ver-A tical arm 92which is connected by a spring 93 with the actuator, so that the elbowlever is normally pulled back into vertical position with its horizontalarm bearing up vagainst the lock lever projection 88; it also has anouter vertical arm 94 which is connected a' pivot 94 with a forwardlyeX-j tending ink 95. The pivot is fixed on the arm 94 and the linkreceives the pivot in a horizontal slot 95, which allows a slightforward and backward yielding of the parts, the rear end of the slotbeing normally pulled closely against the pivot by a spring 96.V

When the lock lever is depressed vby the key shoulder 170 (Fig. 6), theprojection 88 and arm 89 cause the arm 94 of the elbow lever to rockforward on the actuator and thrust forward the link 95 yieldinglythrough a pull on the spring 96. This link is connected bya pivot 97with a pair of forwardly and backwardly swinging links 98 pivotallysupported at 84 on the frame and limited in movement by a fixed crossrod 100 which enters a vertical slot 101 in an arm 102 of the saidlinks. The links carry a pin 98 which extends outward atthe rear side ofthe actuator-locking hook 83, so that the forward thrust of the link 95disengages the hook from the corresponding actuator hook 82. When suchdisengagement occurs in the column in which the depression of a key hasbeen properly begun, the actuator of that lcolumn is free to bedepressed when its top edge is encountered by the lateral shoulder or.lprojection 17 0 on the key stem, and the key and stem are free-to followthe actuator downward. In this movement the lateral projection orshoulder 85 of the key stem encounters the proper stop lever, 11 or 12,according to whether the key is odd or even, and depresses it, andthereby properly positions the stopv detent 15 or' 16, to arrest theactuator at the proper degree of depression to have on the accumulatormechanism, when the actuator rises, an additive e'ect corresponding withthe designation on the key.

lock, one ineach column,-which incidentally and lautomatically locks.the accumulator during normal key action except while the additivefunction is being vperformed (Figs.` 5 and 6): The pin 97 carries aforwardly and backwardly, and upwardly and downwardly movable part, suchas a lever 103 pivoted thereon between the links 98, the links beingyieldingly pressed backward and the forward arm of the lever upward by aspring 104 which connects said parts. The forward end of the lever isalso pressed upwardy by a spring 105 which unites it with the fixedcross rod 100., The forward end of the lever is provided withV a pin 106which enters the slotted ,arm 107 of an accumulator detent 108 pivotedon' the fixedfcross pivot ,rod 109, the arrangement being such that theupward and downward movement of the front arm ofA lever 103 and the arm107 of the detent will respectively engage 'andisengag'e the detent withand from 'the- Following, is described the accumulator,

lantern wheel 21 or equivalent engageable part of the accumulatordriving mechanism. When the said detent engages the lantern wheel it andits accumulator mechanism are locked against rotation, and it isnecessar to remove the detent when and as the additive function of theactuator is performed.

The detent 108 is or may be normally out of engagement with theaccumulator (Fig. 7), but the first downward movement of the key causesthe pin 106 to be thrust forward in the slot of the detent arm 107, andwhen the actuator is then depressed by the key stem it allows to movedown a lateral arm 110 fixed on the rear arm of the lever 103 andextending over and normally held up by the actuator. The forward arm ofthe lever, being normally pressed upward by the springs 104 and 105, nowrises and throws the detent 108 into en agement with the accumulatorwheel 21 ig. 6). When the actuator is at or near the bottom of itsdepression the detent 108 is removed from the accumulator wheel by theaction 'of a side projection 112 (111 in case of the odd lever) on theside of the stop detent lever element 12, which projection depresses thelever 103 at 'the front end and tilts the detent out from theaccumulator wheel. The lever 10:5 carries forward with it, in itsdownward and forward rocking movement, an arm 113 havingalateralprojection 114. 115, 116 is a lever pivoted on a cross pivot rod 117fixed in the frame' and 'having its inner (right) arm 116 arrangedparallel with the column actuator and provided with a lateral projection118 which bears downward on the actuator and is released as the actuatormoves downward; and having its outer (left) arm 115 arranged in the pathof the projection 114. This lever is yieldingly pressed forward anddownward by a spring 119. Just as thedetent 108 comes out of theaccumulator wheel the arm 115, which is resting on the projection 114,is allowed, by the forward tilting of the arm 113, to drop behind saidprojection; which vlocks the detent 108 in its disengaged position,leaving the accumulator free to be turned in the im- 'medi'a'telyensuing adding operationl There is a further means for locking theaccumulator detent out of the lantern wheel, comprising ajlatch 120which hooks under the lateral arm 110 of the lever 103 while the'actuator is coming up, and is so held by a spring 1 21. This preventsthe lever 103 from tiltingto throw the 'detent 108 into engagement, andit 'so remains till the actutor is nearly up. l

An arm l122 of the Ilatch rests on the fixed cross 'rod' 51 'to limitthe backward Qposition vof the latch, under the pull of spring 121,

relative to theV arm 110.n As the actuator arrives at its highestposition, and with itlthie 'auxiliary lever, the lateral outwardprojection 88 on the auxiliary lever lets up the arm 89, and the link 95and lever 103 move backward carrying the arm 110 oi from, and slightlybelow the point of the latch 120. The detent 108 is now out of thelantern wheel. lIt is not locked out but is spring-held out by theupward pressure of the actuator under arm 110. When any key is partiallydepressed, and released, the spring 6 at the bottom of its stem willthrow it up, but the actuator starting to turn the accumulatormechanisms, turns a pin of the lantern against the detent 108 (which hasbeen thrown into the lantern as above described), which arrests theaccumulator against forward turning and holds down the actuator,preventing accumulation, and the error is signaled by the lockin of theother actuators and keys, as hereina ter described.

On the initial depression of a key, as above described, when the lever103 moves forward, the arm 110 encounters the latch 120 on the point ofits hook and` forces it forward slightly and follows down (as the reararm of the lever 103 tilts downward under'pull of springs 104, 105)along the incline of the hook of the latch, thus escaping being lockedup. When from this position the arm 1 10 is tilted upward it displacesthe latch forward, and the spring 121 returns the latch under the arm tohold it up.

I will now describe the lock for actuators in other columns when a-keyis partially depressed andreleased. When a key is partially depressedand released the forward end of lever 103 is elevated and so held bysprings 104 and 105, as above described. On the release of the key theactuator remains down, the accumulator being held from turning by thedetent 108; but the auxiliary lever 86 rises and lets up the arm 89, andthe spring 93 pulls back the link 95 and lever 103, and the rear end 123ofthe lever encounters and thrusts backward the square shaft 124 hung byarms 125 from the rock b ar 126. The rear arm of the lever 103 islimited in its downward movement bythe cross rod 51, and yin so actingon the shaft 124 it may slide rearward on said rod. This square shaftextends across and is common to all of the columns, and is adapted to bethus engaged by the lever103 of each column. On this movement a hook 127(Figs. 11, 12), formerly resting on the top of the shaft 124,.drp sdown, allowin rock shaft 1'28, to which the hook is attac ed, to turnwith itunder the pull ofthe springs 119 through the media of the hooktails 131. The hook 127 and other arms on the rock shaft 128 carry-across rod 130, which bears up under the tails 131 of swinging hooks 1,32(Fig. 5). .These hooks, one for each actuator, are allowed to swingforward under hooks 133 on the actuators being pulled forward by thesprings 119, thereby 'having made an error. 142 is a roc ,oted at 143 tothe frame. 1t carries a series lockin up each actuator, excepting theone partia y depressed. No further accumulation can be performed in theother orders untill these locks are released. Complete depression of thekey formerly partly depressed will give the accumulation intended in itsorder, and thereupon the actuator of this order rises and is also lockedup, its hook 133 having deflected backward, and then interlocked with,the swinging hook 132. All keys in all orders may be now .released bydepressing the release key 134, which bears on cross rod 135 in the reararms 136 of the rock bar 128, and throws up the hook 127, allowing thesquare shaft 124 to swing forwardto a position under the end of thehookthereby holding up the hook ready for a new locking operation incase another key be partly depressed. Before the correction, bycompletely de ressing the key formerly partly depressed, operation ofthe release keys will not release permanently all of the keys, becausethe shaft 124 is now in its rearward position and will not support thehook 127, and the hooks 132, 133 will rengage as soon as the release key134 comes up. Shaft 124 is held rearward by the end 123 of lever 103.Following is a description of the upstroke lock (F igs. 5, 6 and 7)which operates when a key has been fully depressed and is attempted tobe re-depressed without letting it all the way up; 137 is a pawl pivotedat 109 to the frame and adapted to engage the exterior of the ratchet 20for the accumulator. It is pulled toward the ratchet by a spring 138which connects the pawl below its pivot with a part of the detent 108.The play of the pawl is limited by a fixed cross rod 139 situated in aslot 140 of the pawl. The pawl has an oiset arm 141 which is on or overthe rearwardly extending arm 107 of the detent. When a key is beingdepressed the said detent arm is at such a height that it holds up thepawl arm 141 and keeps the pawl clear of the ratchet (Fig. 6), but whenthe key has been completel depressed the detent arm is carried ownwardand the pawl engages the ratchet under the influence of its spring. Thekey may now be released or allowed to return normally, and the ratchetwill turn forward by the operation of the actuator, the ratchet teethsmoothly tripping the pawl. But if the operator press down again on theke)v while it is coming up, and without waiting for it to complete itsstroke, the pawl immediately engages a ratchet tooth and causes theaccumulator to be locked against forward turning by the key and anerroneous accumulation; and the key is locked against furtherdepression, and the operator is compelled to let the key rise completelywithout bar pivthe I of rearwardly extending arms 144, one for eachcolumn, which are arranged over the rear `forked ends 107 of the detentlevers 108. `It also carries corresponding for- Wardly extending arms145 arranged under or Within the rearwardly extending arms 141 of thepaWl 137. When the bar is rocked backward the'arms 144 and 145 act todisengage the detents 108 and paWl 137 from each lantern Wheel andratchet, and leave the Whole accumulator mechanism free from saiddetents and pavvls for the purpose of cancellation or resetting. Therock bar 142 is provided With a forwardly extending crank arm 146, Whichis engaged by the forked end 147 of a link 148. The lower end of. thislink is pivoted at 50l to the forward arm of one of the release barlevers 49, so that at the beginning of t-he movement of the cancelingactuator the bar 142 is rocked and the accumulator of each column isreleased, as above described, in case any detent 108 isA in engagementwith its lantern Wheel. Also it releases the lever end 123 from thecross bar 124.

According to that'feat-ure of my present invention which relates to therelease of the column actuator lock (83, 82), the key is made unitary,las is seen from the foregoing description and is best illustrated inFig. l5, and isproVided With means, for example the shoulder orprojection 170, moving constantly With or substantially rigid with thekey linger button, which means engages both the lock lever and thecolumn actuator, for actuating both the accumulator mechanism and thelocking mechanisms which secure the accumulator mechanism fromoperation, and, under some conditions. secure the keys.

In the machine described by Way of ex ample, the 'accumulationregistering devices consist of numeral Wheels, one for each order, andnumbered according to the decimal system from Zero to nine. It Will beunderstood however that the invention is not confined to the particularregistering devices shown, nor to a decimal system of numeration.

It Will be understood. that when unitary keys are employed in the normalorders of the machine, the shoulders 170 of such keys Will first engageand operate their lock levers, and subsequently their column actuators,the key engaged surfaces or edges of the lock lever being a littlehigher, for such purpose, than are the corresponding surfaces of thecolumn actuator (Fig.

The application of my present improvements to such of the comptometers,described in the patents referred to in the early part of thisspecification, as have two-part keys,

` examples of which are Patents Nos. 1,003,-

723; 1,028,344; 1,000,096; and 1,072,933, consists in part of making thesaid keys unitary. By' unitary it is not intended that the key and allof its lock-operating parts are made in one piece, but that thelock-releasing function of the key is not dependent upon a key havingseparately movable parts as in the case of the two-part keys abovereferred to.`

All of the keys need not be unitary, and in Figs. 16 to 22 I haveillustrated a calculating machine in which those keys 2 which are sideby side are two-part, comprising side interference guards or Wings 81carried on the key stem which drives the column actuator, the auxiliaryor lock lever 86 being preliminarily depressed by the spring tube 79which is rigid with the finger button of the key; all as fully describedin said Patent N o. 1,072,933. And With said two-part keys are combinedeXtra keys 171, 172 in this instance at the head of the units column,having an accumulating value of ten and eleven respectively, suitablefor What is known as a pounds, shillings and pence `(L. s. d.) machine.These keys 171, 172 having no keys beside them Which they are to guard,or from which they are to be guarded, are made unitary, as has beendescribed in connection With the keys 2.

The column actuator 8 for the units column is provided With steps 173,174 for engagement bj.' the shoulders 170 of said keys 171, 172,respectively (Fig. 17).

The stop levers v11, 12 for this units column (Figs. 20 and 21) arecorrespondingly constructed with additional steps 175, 176 to be engagedby the shoulders 85 on the left sid)e ofthe stems of said keys 17.1, 172(Fig. 19

The auxiliary or lock lever 86 (Fig. 22), which coperates with thecolumn actuator 8 in said column, is provided With correspondingsurfaces or steps 177, 178 for engagement by the said shoulders 170,Whereby it is actuated a little in advance of the actuator 8 to releasethe hook 83. For this purpose the steps 177 178 are made alittle higherthan the corresponding steps on the column actuator. The kother keys,one to nine, in this units column give this preliminary actuation to thelock lever by their spring tubes 79.

l have described thecolumn actuator as normally locked against operationexcept by key action, this function being performed by the hooks 83 and82, and it will be so locked Where any of the keys operating upon it aretwo-part as above described; and it may be so normally locked when thekeys are unitary, as shown in the construction illustrated by Figs. 1 to15. And such normal locking of the column actuator, and of the keys bythe actuator, prevents any jarring down or depression of the columnactuator except by intentional key-action. But such normal andpreliminary locking of the said actuator and keys is not necessary tothe other locking functions hereinbefore described (which are in theillustrated embodiment of the invention performed by the detent 108 andpaWl 137), but the hooks 83, 82 may be omitted. This leaves or mayvleave the accumulator mechanism and the Aby an arm 102 which isadapted. to encounter the under side of the rod 100, and are formed withan eye 179 connected by the spring 104 With the lever 103. The rest ofthe machine not shown in Fig. 23 is or may `be of the same constructionas that shown in Figs. 1 to 15, or as shown in said Patent No.1,072,933.

It Will be understood that the invention, and the combination of partsherein claimed, may be embodied in other forms than those illustrated.

What is claimed is:

1. In a multiple-order key-driven calculating machine, in combination:accumulator mechanism including numeral wheels;- column actuators bymeans of which the motion of a key is communicated to the accumulatormechanism; denominational series of unitary keys which are provided Withmeans moving constantly with the key button Ylor actuating both the saidcolumn actuators and a locking mechanism; and said locking mechanismnormally holding the column actuators inoperative; substantially asspecified,

2. In a multiple-order key-driven calculating machine, in combination 1accumulator mechanism including numeral wheels; column actuators bymeans of Which the motion of a key is communicated to the accumulatormechanism; denominational series of unitary keys the stems of which areprovided With means substantially rigid with the. key button foractuating' both the said column actuators and a locking mechanism; andsaid locking mechanism normally holding the column actuatorsinoperative; substantially as specified.

3. In a'multiple-order key-driven calculating machine, in combination:adding mechanism including numeral Wheels; denominational series ofunitary keys provided with means mov-ing constantly With the key buttonfor actuating both the said adding mechanism and the locking mechanism;and said locking mechanism adapted to lock a key, after its addingmovement, against a further adding movement until the key has beenrestored to normal position, the locking lbeing. ordinally controlled bya single key in each of said orders; substantially as specified.

In a multiple-order key-driven calculating machine, in combination:adding mechanismincluding numeral wheels; dcnominational series ofunitary keys for actuating both the said adding mechanism and the twore\erse locking mechanisms; and said two reverse locking mechanismsguarding a key against mis-manipulation during its lirst moven'ient andduring its return movement, respectively; one of said locking mechanismsacting on the adding mechanism independently of the key; substantiallyas specified.

5. In a multiple-order key-driven calculating machine, in combination:accumulator mechanism including numeral Wheels; denominational series ofunitary keys which are provided with means substantially rigid with thekey button for actuating both the said accumulator mechanism and alocking mechanism; and said locking mechanism adapted to lock theaccumulator mechanism and through the accumulator mechanism to lock akey after a complete adding movement of said key, against a furtheradding movement of said key, until the ke has been restored to normalposition; su stantially as specified.

6. In a multiple-order key-driven calculating machine, in combination:accumulator mechanism including numeral wheels; denominational series ofunitary keys which are provided with means substantially rigid 100 withthe key button for actuating both the 'said accumulator mechanism and alocking mechanism; and said locking mechanism acting, during the normalreciprocations of a key, to lock the accumulator mechanism againstadditive movement While the reciprocation of Ithe key is not additiveand leave the accumulator mechanism 'lrce during the other reciprocationof the key, said locking mechanism also acting to prevent reversemovement of a key during its said other reciprocation; substantially asspecified.

7. In a multiple-order key-driven calculating machine, in combination:accumulator mechanism including numeral Wheels; denominational 'seriesof unitary keys which are provided with means substantially rigid Withthe key buttons for actuating both the said accumulator mechanism and alocking mechanism, and said locking mechanism comprising devices adaptedto lock a key, after a com lete adding movement thereof, 'against aurther adding movement, and which releases the key upon the return ofthe latter to normal position, the said locking devices acting on theaccumulator mechanism independently yof the key; substantially asspecified.'

8. In a multiple-order key-driven calculating machine, in combination:accumulator mechanism including numeral Wheels; column actuators andlock levers; demoninational series oi unitary keys u'hich are, providedwith means substantially rigid with the key buttons for depressing thecolumn actuators and auxiliary levers; transmission devices includingratchets whereby the column actuators drive the accumulator mechanism;detents for locking the accumulator mechanism; pawls` for locking thesaid ratchets; and connections between the lock levers and the saiddetcnts and pawls; substantially as specified.

9. In a multiple-order key-driven calculating machine, in combination:actuating means and transmission devices; accumulator mechanismincluding numeral wheels; denominational series of unitary keys whichare provided with means moving constantly with the key buttons fordriving the said accumulator mechanism and actuating the lockingmechanism; and said locking mechanism for locking the accumulatormechanism after a complete additive movement of a key and until the keyreturns to normal position; said locking means operating on thetransmission devices which drive thc accumulator mechanism substantiallyas specified.

10. In a multiple-order key-driven calculating machine, in combination:accumulator mechanism including numeral Wheels; actuating means andtransmission devices, including a ratchet, lfor driving the accumulatormechanism; denominational series of unitary keys which are provided withmeans moving constantly with the key button for driving the saidactuating means and operating the locking mechanism; and said lockingmechanism for locking the accumulator mechanism after a completeadditive movement of the key and until the key returns to normalposition, said locking means operat-- ing on the ratchet which drivesthe accumulator mechanism; substantially as specified.

l1. In a multiple-order key-driven calculating machine, in combination:adding mechanism including numeral wheels; denominational series ofunitary keys provided with means substantially rigid with the keybuttons for actuating the said adding mechanism and for actuating thelocking mechanism and devices; said locking mechanism comprising devicesadapted to lock a key, after a complete adding moven'ient thereof,against a further adding movement, and which releases the key upony itsreturn to normal position; and devices adapted, on partial depressionand release of a key, to lock the ke`ys in other columns of the saidadding mechanism against depression; and means for releasing the latterkeys; substantially as specified.

12. In a multiple-order key-driven calculaiw, machine, in combination:adding mechanism including numeral Wheels; column actuators for drivingthe said adding mechanism; denominational series of unitary keys foractuating the said column actuators and for actuating the lockingmechanisms; two reverse locking mechanisms guarding such keys againstmis-manipulation, during their irst movement and during their returnmovement, respectively, the locking being operable by a plurality ofkeys manipulated simultaneously in separate orders; and a normal lockingmechanism acting directly on the said column actuators, thc unlocking ofsaid normal locking mechanism acting to position the parts for theoperations of the said reverse locking mechanisms during the furthermovements of the keys; substantially as specified.

13. In a multiple-order key-driven calculating machine, in combination:accumulator mechanism including numeral Wheels and carrying mechanisms;unitary driving keys therefor; transmission devices for actuating theaccumulator mechanism, including column actuators having surfaces forengagement by the keys and operable, in co-action with saidcarrying-mechanisms, in a plurality of orders simultaneously; locklevers arranged by the column actuators, the column actuators and locklevers having corresponding surfaces for engagement by the same parts ofthe keys, and arranged for th'e preliminary actuation of the lock leversand the subsequent actuation of the column actuators; and lockingmechanism controlled by the said lock levers; the locking being operableby al plurality of keys manipulated simultaneously in separate orders,and beingy ordinally. controlled by a single key in each of said orders;substantially as specified.

14. l'n a multiple-order key-driven calculating machine, in`combination: accumulator mechanism including numeral Wheels and carryingmechanisms: driving keys therefor: transmission devices Jfor actuatingthe accumulator mechanism, including column actuators having surfacesfor engagement by the keys and operable, in co-action with saidcarrying-mechanisms. in a plurality of orders simultaneously; locklevers arranged by the column actuators and having surfaces, forengagement by the same parts ot the keys, which are higher than thecorresponding surfaces of the column actuators; and locking mechanismcontrolled by the said lock levers: the locking being operable by aplurality of keys manipulated simultaneously in separate orders. andbeing ordinally controlled by a single key in each of said orders;substantially as specified.

15. In a multiple-order key-driven calculating machine. in combination:adding mechanism including numerical wheelsand carrying mechanismadapted to permit prime a'ctuations of the adding mechanism in a pluirality of orders simultaneously; denominational series of unitary keysso operable simultaneously and provided With means moving constantlywith the key button for actuating both the said adding mechanism and thelocking mechanism; and said locking mechanism adapted to lock a key,after its adding movement, against a further adding movement until thekey has been restored to normal position, the locking being operable bya plurality of keys manipulated simultaneously in separate orders, andbeing ordinally controlled by a single key in each of said orders;substantially as specified.

16. In a multiple-order key-driven calculating machine in combination:adding mechanism including numeral Wheels and carrying mechanismsadapted to permit prime actuations of the adding mechanism in aplurality of orders simultaneously; denominational series of unitarykeys so operable simultaneously and provided With means substantiallyrigid with the key buttons for actuating the said adding mechanism andfor actuating the locking mecha nism and devices; said locking mechanismcomprising devices adapted to lock a key, after a complete addingmovement thereof, against a further adding movement, and which releasesthe key upon its return to normal position; devices adapted. on partialdepression and release of a key, to lock the keys in other columns ofthe said adding mechanism against depression; and means for releasingthe latter keys; the locking being Operable by a plurality of keysmanipulated simultaneously in separate orders, and being ordinallycontrolled by a single key in each of said orders; substantially asspecied.

17. In a multiple-order key-driven calculating machine in combination:accumulator mechanism 'including numeral Wheels and carrying mechanismadapted to permit prime actuations of the accumulator mechanism in aplurality of orders simultaneously; driving keys therefor and sooperable simultaneously; transmission devices for actuating theaccumulator mechanism; including column actuators having surfaces forengagement by the keys; lock levers arranged by the column actuators andhaving surfaces, for engagement by the same parts of the keys, which arehigher than the corresponding surfaces of the column actuators; andlocking mechanism ccntrolled by the said lock levers; the locking beingoperable by a plurality of keys manipulated simultaneously in separateorders, and being ordinally controlled by a single key in each of .saidorders; substantially as specied.

18. In a multiple-order key-driven cal culatin machine, in combination:adding mechanism including numeral Wheels; denominational series ofunitary keys provided With means moving constantly with the key buttonfor actuating both the said adding mechanism and the locking mechanism;and said locking mechanism adapted to lock a key, after its addingmovement, against a further adding movement until the key has beenrestored to normal position, the locking `being ordinally controlled bya single key in each of said orders, and the adding mechanism beingnormally free for operation until locked; substantially as specified.

19. In a multiple-order key-driven calculating machine, in combination:adding mechanism including numeral Wheels; denominational series ofunitary keys provided With means substantially rigid with the keybuttons for actuating the said adding mechanism and for actuating thelocking mechanism and devices; said locking mechanism comprising devicesadapted to lock a key, after a complete adding movement thereof, againsta further adding movement, and which releases the key upon its return tonormal position; and devices adapted, on partial depression and releaseof a key, to lock the keys in other columns of the said adding mechanismagainst depression; and means for releasing the latter keys, the addingmechanism being normally free for operation until locked; substantiallyas specified.

20. In a multiple-order key-driven calculating machine, in combination:accumulator mechanism including numeral Wheels and carrying mechanisms;driving keys therefor; transmission devices for actuating otheaccumulator mechanism, including column actuators having surfaces forengagement by the keys and operable, in coaction With saidcarrying-mechanisms, in a, plurality of orders simultaneously; locklevers arranged by the column actuators and having surfaces, forengagement by the same parts of the keys; which are higher than thecorresponding surfaces of the column actuators; and locking mechanismcontrolled by the said lock levers, the column actuators being normallyfree for operation until locked; the locking being operable bya'plurality of keys manipulated simultaneously in separate orders, andbeing ordinally controlled bv a single key in each of said orders;substantially as specified.

21. In a multiple-order key driven calculating machine, in combination:accumulator mechanism including numeral Wheels; column actuators bymeans of which the motion of a key is communicated to the accumulatormechanism; denominational series of unitary keys all parts of the headsoh which are free to move with the finger at In testimony whereof I axmysignature the initial part ofthe stroke and which are 'in presence oftwo Witnesses.

provided with means for actuating both the said column actuators and alocking KURT F' ZIEHM mechanism; and said locking mechanism Witnesses:normally holding the column actuators in- PHILIP E. KUNTZ, operative;substantially as specied. SOHUYLER C. BROWN.

